High‑Performance GY6 Engine Parts & Custom Racing Solutions

Published September 27, 2025
Posted in Blog

GY6 Engine Parts & Custom Racing Solutions | Ruizheng Racing

GY6 Engine Parts & Custom Racing Solutions

Your trusted supplier for high-performance GY6 parts and bulk customization.

Why Choose Ruizheng Racing for GY6 Engine Parts

Whether you operate a performance shop, manage a racing team, or distribute motorcycle components in markets such as Puerto Rico and the Caribbean, sourcing reliable GY6 engine parts is critical. Ruizheng Racing specializes in GY6 racing parts ranging from camshaft GY6 upgrades to GY6 crankshaft solutions and complete GY6 performance kit packages. We supply everything from a 125cc GY6 big bore kit to a full 232cc GY6 engine rebuild kit, ensuring your customers experience the best GY6 engine performance parts.

Popular GY6 Products

GY6 Crankshaft | GY6 Camshaft | GY6 Timing Sprocket | GY6 Cylinder Head

We offer GY6 150cc parts, GY6 150cc racing parts, and GY6 aftermarket parts designed for durability and improved horsepower. From 150cc GY6 engine performance parts to 200cc big bore kit for GY6 150cc, our catalog covers a full spectrum of needs. Looking for something extreme? Our GY6 232cc big bore kit pushes the limit of engine displacement.

Customization & Bulk Purchasing

We understand that racing workshops and distributors often require bulk orders and custom branding. Our services include:

MOQ for crankshafts: 100–300 pieces
MOQ for camshafts and timing sprockets: 500 pieces
MOQ for cylinder heads: 100–300 pieces
Custom laser-engraved logos on camshafts or crankshafts
Black premium boxes or clear plastic packaging with private labels

Examples of customization:

Video Demonstrations

Take a closer look at our manufacturing precision:

Your GY6 Engine Upgrade Guide: Crankshaft, Camshaft & More

For performance enthusiasts and professional racing teams seeking maximum horsepower, upgrading the GY6 engine—including popular models such as GY6 150cc, GY6 161Qmk, GY6-B/GY7 Tank 200, and even Daytona 190cc—requires a careful approach to crankshaft, camshaft, and cylinder kit enhancements.

1. The Role of the GY6 Crankshaft

The crankshaft is the heart of the engine. It converts the piston's linear motion into rotational power, directly affecting torque output and RPM behavior. For GY6 engines, increasing the crankshaft stroke can significantly raise displacement and power—making it one of the most critical steps in high-performance tuning.

Common compatible engine codes include: GY6 150cc / 161Qmk / GY6-B / GY7 Tank 200 / Daytona 190cc. Always verify piston-to-valve clearance for safe operation.

2. Stroke Increase & Performance Impact

Popular stroke increments: +4mm, +8mm, +12mm, +16mm, or custom. Each additional stroke increases engine displacement, boosts mid-range torque, and enhances high-RPM power curves. Pairing a stroker crank with a big bore kit GY6 and a 4-valve cylinder head creates a formidable big block engine.

Note: Large-stroke crankshafts should be sample-tested to ensure the piston does not contact the valves. Ruizheng Racing can provide a sample crankshaft before bulk production for validation.

3. Key Precautions for High-Displacement Builds

Piston-to-Valve Clearance: Verify that the piston path will not interfere with valves when using a long-stroke crankshaft.
Supporting Parts:
- GY6 Camshaft: Choose a high-performance camshaft matched to the new crank stroke.
- GY6 Timing Chain Sprocket: Ensure perfect synchronization between camshaft and crankshaft; adjustable-degree sprockets available.
- GY6 Cylinder Head (2 or 4 valves): Improves airflow and complements big-bore displacement.
High-Displacement Cylinder Set: Combine with stroker crankshaft for maximum output; custom big block kits ensure reliability.

4. Importance of Sample Verification

For high-performance builds, especially for GY6 150cc, 161Qmk, and 200cc Tank engines, sample testing is crucial. It allows confirmation of piston-valve clearance, crankshaft-camshaft alignment, and timing-chain adjustment before bulk production.

5. Recommended Companion Parts

Part	Function	Key Features
GY6 Camshaft	Improves intake & exhaust efficiency	Laser-engraved logo, custom profiles
GY6 Timing Chain Sprocket	Synchronizes crank & cam	Adjustable degree for tuning
GY6 Cylinder Head 4 Valves	Increases airflow	Compatible with big-stroke cranks & big bore kits
GY6 Cylinder Set	Raises displacement & durability	Big block engine design, bulk purchase ready

Remember, we support bulk purchasing: minimum order quantities (MOQs) are 100–300 pieces for crankshafts, 500 pieces for camshafts and timing sprockets, and 100–300 pieces for cylinder heads.

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